Heterogeneous nucleation on a completely wettable substrate

Homogeneous nucleation at high supersaturation and heterogeneous nucleation on microscopic wettable particles: A hybrid thermodynamic/density-functional theory.

Homogeneous nucleation at high supersaturation of vapor and heterogeneous nucleation on microscopic wettable particles are studied on the basis of Lennard-Jones model system. A hybrid classical thermodynamics and density-functional theory (DFT) approach is undertaken to treat the nucleation problems. Local-density approximation and weighted-density approximation are employed within the framewor...

Availability Analysis For Heterogeneous Nucleation In A Uniform Electric Field

Industrial demands for more compact heat exchangers are a motivation to find new technology features. Electrohydrodynamics (EHD) is introduced as a promising phenomenon for heat transfer enhancement mechanisms. Similar to any new technology, EHD has not been understood completely yet and requires more fundamental studies. In boiling phase change phenomena, nucleation is the dominant mechanism i...

Heterogeneous nucleation on mesoscopic wettable particles: A hybrid thermodynamic/density-functional theory

Molecular Dynamics Simulation of Vapor Bubble Nucleation on a Solid Surface

Heterogeneous nucleation of vapor bubbles on a solid surface was simulated by the molecular dynamics method. Liquid argon between parallel solid surfaces was gradually expanded, until a stable vapor bubble was nucleated. Argon liquid was represented by Lennard-Jones molecules and each surface was represented by three layers of harmonic molecules with the constant temperature heat bath model usi...

Line-tension effects on heterogeneous nucleation on a spherical substrate and in a spherical cavity.

The line-tension effects on heterogeneous nucleation are considered when a spherical lens-shaped nucleus is nucleated on top of a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension on the nucleation barrier can be separated from the usual volume term. As the radius of the substrate increases, the nucleation barrier decreases and approaches that o...